tofsee | 85f3e6877c64d381b12f09fe34963642833e8ac3ef52f18b094d73a7544a7b30

General

Target

6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe
Size

82KB
MD5

6b1e671746373a5d95e55d17edec5623
SHA1

009e9f638433f95241a84b304ff2504fc90a8871
SHA256

85f3e6877c64d381b12f09fe34963642833e8ac3ef52f18b094d73a7544a7b30
SHA512

f5978df5434fd28c964f5bbf3a9cc24d9cfe7a1adca6abe9427908141d6668fc705f3f6ee322bff9a7b7c0475ce7b0c61b2959fbb926f219be06fd661e469f12
SSDEEP

1536:LdSW3HA5cgXLmcuaqcddYqTKBLjLbqHSgwBlBE21zhGryXnDWcwVHb0Qpm3QniXJ:4eHUcZcua1TK33BwKzOkGpYQniXh

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

185.4.227.76

188.165.132.183

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Deletes itself 1 IoCs

pid	Process
1812	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2008	ffonzlya.exe

Loads dropped DLL 2 IoCs

pid	Process
2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe
2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\ffonzlya.exe\""	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 2868	2008	ffonzlya.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffonzlya.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2008	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2008	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2008	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2008	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	30
PID 2540 wrote to memory of 1812	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	31
PID 2540 wrote to memory of 1812	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	31
PID 2540 wrote to memory of 1812	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	31
PID 2540 wrote to memory of 1812	2540	6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe	31
PID 2008 wrote to memory of 2868	2008	ffonzlya.exe	33
PID 2008 wrote to memory of 2868	2008	ffonzlya.exe	33
PID 2008 wrote to memory of 2868	2008	ffonzlya.exe	33
PID 2008 wrote to memory of 2868	2008	ffonzlya.exe	33
PID 2008 wrote to memory of 2868	2008	ffonzlya.exe	33
PID 2008 wrote to memory of 2868	2008	ffonzlya.exe	33

C:\Users\Admin\AppData\Local\Temp\6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6b1e671746373a5d95e55d17edec5623_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Users\Admin\ffonzlya.exe
  "C:\Users\Admin\ffonzlya.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2868
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\1734.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\1734.bat

Filesize
266B

MD5
48f93b77ae8dcaaad0f9f939f02bbd76

SHA1
238a8023866b8144b9b2d01b6eb6ecd263f60c2d

SHA256
1bece01bbd302cee2804f329767f134c98d8bef52f04708b83c4944a070ad80c

SHA512
cb007dc26d64eac183e36396389721fc7ec4cafb996974d2fd7788bb73ea900ffd77e30e6d5b92f501edcb0f75b9f72610f43b55db593c063a73c7fc681fd473

Download Submit
\Users\Admin\ffonzlya.exe

Filesize
82KB

MD5
6b1e671746373a5d95e55d17edec5623

SHA1
009e9f638433f95241a84b304ff2504fc90a8871

SHA256
85f3e6877c64d381b12f09fe34963642833e8ac3ef52f18b094d73a7544a7b30

SHA512
f5978df5434fd28c964f5bbf3a9cc24d9cfe7a1adca6abe9427908141d6668fc705f3f6ee322bff9a7b7c0475ce7b0c61b2959fbb926f219be06fd661e469f12

Download Submit
memory/2008-24-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2008-23-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2008-36-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2008-25-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2540-20-0x0000000000401000-0x0000000000405000-memory.dmp

Filesize
16KB

Download
memory/2540-3-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2540-0-0x0000000000401000-0x0000000000405000-memory.dmp

Filesize
16KB

Download
memory/2540-21-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2540-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2868-26-0x00000000000C0000-0x00000000000D1000-memory.dmp

Filesize
68KB

Download
memory/2868-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-40-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/2868-39-0x00000000000C0000-0x00000000000D1000-memory.dmp

Filesize
68KB

Download
memory/2868-35-0x00000000000C0000-0x00000000000D1000-memory.dmp

Filesize
68KB

Download
memory/2868-42-0x00000000000C0000-0x00000000000D1000-memory.dmp

Filesize
68KB

Download
memory/2868-43-0x00000000000C0000-0x00000000000D1000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads